| Co-Investigator(Kenkyū-buntansha) |
KOYAMA Toshiki Shinshu University, Faculty of Textile Science & Technology, Assistant Professor, 繊維学部, 助手 (90178393)
HANABUSA Kenji Shinshu University, Faculty of Textile Science & Technology, Associate Professor, 繊維学部, 助教授 (60126696)
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| Research Abstract |
We synthesized four kinds of low-molecular-mass gelling agents to harden organic fluids. The developed low-molecular-mass gelling agents are (i) alkyl amides of N-benzyloxy-alpha-amino acids, (ii) two-componet mixture of 5-alkyl-2,4,6-triaminopyrimidine and 5-alkyl barbituric acid, (iii) cyclo (dipeptide) s, and (iv) oligo (alpha-amino acid) s.
Octadecyl amides of N-benzyloxy-L-valine and N-benzyloxy-L-valyl Lvaline were foud to be ecellent gelling agents among the analogous amino acid derivatives. We showed that a l : 1 mixture of 5-hexadecyl-2,4,6-triaminopyrimidine and 5,5-didodecylbarbituric acid was the first example of two component type of gelling agent. We studied over 20 derivatives of cyclo (dipeptide) s as gelling agent. In general, cyclo (dipeptide) s consisting of differing amino acids (e.g.neutral and acidic) were superior as gelling agents to those containing similar amino acids such as cyclo (L-valyl-L-Leucyl). With respect to oligo (alpha-amino acid) s, oligomers which fomred beta-structure through intermolecular hydrogen bond in solvent had useful potential as gelling agents. In particular, oligo (L-valine), oligo (L-isoleucine), oligo(L-phenylalanine), and oligo (gamma-alkyl-L-glutamate) were good for hardening organic fluids.
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